A Differential Modulation Scheme for Metasurface-Based Terahertz Communications
Metasurface-based terahertz (THz) modulators, which carry information by changing the spatial pattern of the metasurface at every symbol time, are an important component to establish low-cost low-energy–consuming THz communication systems.
Shuaishuai Guo, Jia Ye, Peng Zhang
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Chiral Metasurface for Near-Field Imaging and Far-Field Holography Based on Deep Learning
Chiral metasurfaces have great influence on the development of holography. Nonetheless, it is still challenging to design chiral metasurface structures on demand.
Yihang Qiu+5 more
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Proof of concept of a new real-time metasurface sensor for micropoison monitoring in aqueous solutions is proposed in this study. The sensor comprises a perfect absorber metasurface and gold nanoparticle layer on the front side of it.
Amir Abramovich+2 more
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Design of a wideband random phase gradient metasurface by using line-shaped element
Based on phase randomization theory, a method for manufacturing metasurface with diffuse scatter performance is proposed. By using the line-shaped elements with random rotate angles and random distributing positions, the metasurface can achieve good ...
Jiangniu Wu+5 more
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Metasurface-enabled on-chip multiplexed diffractive neural networks in the visible [PDF]
Replacing electrons with photons is a compelling route toward high-speed, massively parallel, and low-power artificial intelligence computing. Recently, diffractive networks composed of phase surfaces were trained to perform machine learning tasks ...
Xuhao Luo+8 more
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Controllable Manipulation of Wi-Fi Signals Using Tunable Metasurface
In this paper, we propose the utilization of a programmable metasurface for flexibly manipulating ambient Wi-Fi signals. First, we propose a new and efficient optimization algorithm CWGS (Complex Weighted Gerchberg-Saxton), which is based on an ...
Ya SHUANG+4 more
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Optical secret sharing with cascaded metasurface holography [PDF]
The secret of a holographic image can be shared across two closely stacked metasurface holograms. Secret sharing is a well-established cryptographic primitive for storing highly sensitive information like encryption keys for encoded data.
P. Georgi+6 more
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Frequency coding metasurface for multiple directions manipulation of terahertz energy radiation
A multifunctional frequency coding metasurface is proposed in terahertz frequency band. Different from the previous coding metasurface with a fixed phase difference of the neighbor coding unit cells in the whole working frequency band, the proposed ...
Shao-He Li, Jiu-Sheng Li
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Cascaded Channel Estimation for Large Intelligent Metasurface Assisted Massive MIMO [PDF]
In this letter, we consider the problem of channel estimation for large intelligent metasurface (LIM) assisted massive multiple-input multiple-output (MIMO) systems. The main challenge of this problem is that the LIM integrated with a large number of low-
Zhen-Qing He, Xiaojun Yuan
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A metasurface-based light-to-microwave transmitter for hybrid wireless communications
Signal conversion plays an important role in many applications such as communication, sensing, and imaging. Realizing signal conversion between optical and microwave frequencies is a crucial step to construct hybrid communication systems that combine ...
X. Zhang+8 more
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